DSA Lab

What it does

DSA Lab is a free code visualizer for data structures and algorithms. Trace JavaScript, TypeScript, and Python step by step, work through curated learning paths, and practice the Top Interview 150 question bank with runnable, traceable solutions.

A code visualizer for understanding what an algorithm is doing, one state at a time. Paste your code, run the trace, and step through every comparison, swap, and call. Run code in a focused sandbox and move through every useful state at your own pace. Arrays, hash maps, windows, stacks, queues, graphs, and recursive call stacks stay visible. Paste JavaScript or TypeScript, add JSON input, and get an inferred trace without writing custom visualization code. Sign in to save named solutions by topic, then return to them whenever you want to practice. Five live demos, one per family — sorting, searching, trees, hashing, and recursion. Each one plays the real visualizer: bubble sort swaps values…from code-visualizer-kappa.vercel.app

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  Algorithm Visualizer2016 · jasonpark.me · ▲263

  Write down your algorithm to be visualized

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  DSA Visualizer2025 · dsavisualizer.in · ▲3

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  Interactive Visualizations for Learning DSA

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  Data Formulator – AI-powered data visualization from Microsoft Research2024 · github.com · ▲212

  Creating data visualizations with AI nowadays often means chat, chat and more chats...and writing long prompts can be annoying while they are also not the most effective way to describe your visualization designs. Data Formulator blends UI interaction with natural language so that you can create visualizations with AI much more effectively! You can: * create rich visualizations beyond initial datasets, where AI helps transforming and visualizing data along the way * iterate your designs and dive deeper using data threads, a new way to manage your conversation with AI. Here is a demo video:…

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